TPX AMBER T065-1-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

EU SLIP ADDITIVE 1 OB-1 DISPERSION 2 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

PEARL SILVER 1 BLUE S-218-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

T705-1-1 TR. Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X ET-5878-002-1 Natural X ET-7130-001-1 Natural Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

X ST402-01-1 Internal 1 Pack MB-3P B8502 Gray 2558 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

GREY-1/ PPRO-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

September 1, 2022 Investor Relations Contact: Giuseppe (Joe) Di Salvo, Vice President, Treasurer and Investor Relations, Avient Corporation, +1 440-930-1921, giuseppe.disalvo@avient.com; Media Contact: Kyle G. Rose, Vice President, Corporate Communications, Avient Corporation, +1 440-930-3162, kyle.rose@avient.com

15:1 L48-1206 TRANS BLUE IN TPU PCR ICY BLUE Q330-5-1 Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)

GREY 1749 PMS-1 V4 ZHEA EBONY(SM)FT1002 10:1 VII Shipment Notification - under "Material Header" MSDS - labeled as the "Product Number" (in Section 1)